search for: drm_dp_update_payload_part1

...tion(+), 3 deletions(-) > > diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c > index ad0fb6d003be..9b1b5c9b1fa0 100644 > --- a/drivers/gpu/drm/drm_dp_mst_topology.c > +++ b/drivers/gpu/drm/drm_dp_mst_topology.c > @@ -1896,9 +1896,7 @@ int drm_dp_update_payload_part1(struct drm_dp_mst_topology_mgr *mgr) > req_payload.num_slots = 0; > } > > - if (mgr->payloads[i].start_slot != req_payload.start_slot) { > - mgr->payloads[i].start_slot = req_payload.start_slot; > - } > + mgr->payloads[i].start_slot = req_payload.start_sl...

...1 file changed, 42 insertions(+), 29 deletions(-) diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c index 9b1b5c9b1fa0..2ab16c9e6243 100644 --- a/drivers/gpu/drm/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/drm_dp_mst_topology.c @@ -1879,39 +1879,48 @@ int drm_dp_update_payload_part1(struct drm_dp_mst_topology_mgr *mgr) mutex_lock(&mgr->payload_lock); for (i = 0; i < mgr->max_payloads; i++) { + struct drm_dp_vcpi *vcpi = mgr->proposed_vcpis[i]; + struct drm_dp_payload *payload = &mgr->payloads[i]; + /* solve the current payloads - compare to th...

...+--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c index ad0fb6d003be..9b1b5c9b1fa0 100644 --- a/drivers/gpu/drm/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/drm_dp_mst_topology.c @@ -1896,9 +1896,7 @@ int drm_dp_update_payload_part1(struct drm_dp_mst_topology_mgr *mgr) req_payload.num_slots = 0; } - if (mgr->payloads[i].start_slot != req_payload.start_slot) { - mgr->payloads[i].start_slot = req_payload.start_slot; - } + mgr->payloads[i].start_slot = req_payload.start_slot; /* work out what is required...

...s(+), 29 deletions(-) > > diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c > index 9b1b5c9b1fa0..2ab16c9e6243 100644 > --- a/drivers/gpu/drm/drm_dp_mst_topology.c > +++ b/drivers/gpu/drm/drm_dp_mst_topology.c > @@ -1879,39 +1879,48 @@ int drm_dp_update_payload_part1(struct drm_dp_mst_topology_mgr *mgr) > > mutex_lock(&mgr->payload_lock); > for (i = 0; i < mgr->max_payloads; i++) { > + struct drm_dp_vcpi *vcpi = mgr->proposed_vcpis[i]; > + struct drm_dp_payload *payload = &mgr->payloads[i]; > + > /* solve t...

...ntil it's payloads > have been removed - finally allowing us to actually release said > payloads correctly. > > Signed-off-by: Lyude Paul <lyude at redhat.com> I think with this we can also remove the int return value (that everyone ignored except for some debug output) from drm_dp_update_payload_part1/2. Follow-up cleanup patch ofc. This looks good. Reviewed-by: Daniel Vetter <daniel.vetter at ffwll.ch> > --- > drivers/gpu/drm/drm_dp_mst_topology.c | 54 +++++++++++++++------------ > 1 file changed, 30 insertions(+), 24 deletions(-) > > diff --git a/drivers/gpu/drm/drm_d...

...c int drm_dp_payload_send_msg(struct drm_dp_mst_topology_mgr *mgr, kfree(txmsg); fail_put: drm_dp_mst_topology_put_mstb(mstb); - drm_dp_mst_topology_put_port(port); return ret; } @@ -2137,15 +2130,16 @@ static int drm_dp_destroy_payload_step2(struct drm_dp_mst_topology_mgr *mgr, */ int drm_dp_update_payload_part1(struct drm_dp_mst_topology_mgr *mgr) { - int i, j; - int cur_slots = 1; struct drm_dp_payload req_payload; struct drm_dp_mst_port *port; + int i, j; + int cur_slots = 1; mutex_lock(&mgr->payload_lock); for (i = 0; i < mgr->max_payloads; i++) { struct drm_dp_vcpi *vcpi = m...

...c int drm_dp_payload_send_msg(struct drm_dp_mst_topology_mgr *mgr, kfree(txmsg); fail_put: drm_dp_mst_topology_put_mstb(mstb); - drm_dp_mst_topology_put_port(port); return ret; } @@ -2256,15 +2249,16 @@ static int drm_dp_destroy_payload_step2(struct drm_dp_mst_topology_mgr *mgr, */ int drm_dp_update_payload_part1(struct drm_dp_mst_topology_mgr *mgr) { - int i, j; - int cur_slots = 1; struct drm_dp_payload req_payload; struct drm_dp_mst_port *port; + int i, j; + int cur_slots = 1; mutex_lock(&mgr->payload_lock); for (i = 0; i < mgr->max_payloads; i++) { struct drm_dp_vcpi *vcpi = m...

...eau/dispnv50/disp.c index b111fe2..d05c57c 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/disp.c +++ b/drivers/gpu/drm/nouveau/dispnv50/disp.c @@ -1379,6 +1379,9 @@ nv50_mstm_prepare(struct nv50_mstm *mstm) NV_ATOMIC(drm, "%s: mstm prepare\n", mstm->outp->base.base.name); ret = drm_dp_update_payload_part1(&mstm->mgr); + if (ret) { + NV_ATOMIC(drm, "failed to update payload %d\n", ret); + } drm_for_each_encoder(encoder, mstm->outp->base.base.dev) { if (encoder->encoder_type == DRM_MODE_ENCODER_DPMST) { -- 2.7.4

...MODE_ENCODER_DPMST) { @@ -1330,10 +1328,9 @@ nv50_mstm_prepare(struct nv50_mstm *mstm) { struct nouveau_drm *drm = nouveau_drm(mstm->outp->base.base.dev); struct drm_encoder *encoder; - int ret; NV_ATOMIC(drm, "%s: mstm prepare\n", mstm->outp->base.base.name); - ret = drm_dp_update_payload_part1(&mstm->mgr); + drm_dp_update_payload_part1(&mstm->mgr); drm_for_each_encoder(encoder, mstm->outp->base.base.dev) { if (encoder->encoder_type == DRM_MODE_ENCODER_DPMST) { diff --git a/drivers/gpu/drm/nouveau/nouveau_svm.c b/drivers/gpu/drm/nouveau/nouveau_svm.c index 2d...

...of the comments from the reviews for the series this is based off of: drm/dp_mst: Improve VCPI helpers, use in nouveau https://patchwork.freedesktop.org/series/51414/ This is just getting put on the ML so I can get some feedback on this. Lyude Paul (15): drm/dp_mst: Remove bogus conditional in drm_dp_update_payload_part1() drm/dp_mst: Refactor drm_dp_update_payload_part1() drm/dp_mst: Introduce new refcounting scheme for mstbs and ports drm/dp_mst: Stop releasing VCPI when removing ports from topology drm/dp_mst: Fix payload deallocation on hotplugs using malloc refs drm/i915: Keep malloc references to MS...

...); + drm_dp_mst_topology_put_port(port); return -ENOMEM; } @@ -1799,7 +1808,7 @@ int drm_dp_send_power_updown_phy(struct drm_dp_mst_topology_mgr *mgr, ret = 0; } kfree(txmsg); - drm_dp_put_port(port); + drm_dp_mst_topology_put_port(port); return ret; } @@ -1888,7 +1897,8 @@ int drm_dp_update_payload_part1(struct drm_dp_mst_topology_mgr *mgr) if (vcpi) { port = container_of(vcpi, struct drm_dp_mst_port, vcpi); - port = drm_dp_get_validated_port_ref(mgr, port); + port = drm_dp_mst_topology_get_port_validated(mgr, + port); if (!port) { mutex_unlock(&mgr-&g...

.../* @@ -3381,12 +3379,6 @@ static void drm_dp_destroy_connector_work(struct work_struct *work) drm_dp_port_teardown_pdt(port, port->pdt); port->pdt = DP_PEER_DEVICE_NONE; - if (!port->input && port->vcpi.vcpi > 0) { - drm_dp_mst_reset_vcpi_slots(mgr, port); - drm_dp_update_payload_part1(mgr); - drm_dp_mst_put_payload_id(mgr, port->vcpi.vcpi); - } - drm_dp_mst_put_port_malloc(port); send_hotplug = true; } -- 2.19.2

.../* @@ -3491,12 +3489,6 @@ static void drm_dp_destroy_connector_work(struct work_struct *work) drm_dp_port_teardown_pdt(port, port->pdt); port->pdt = DP_PEER_DEVICE_NONE; - if (!port->input && port->vcpi.vcpi > 0) { - drm_dp_mst_reset_vcpi_slots(mgr, port); - drm_dp_update_payload_part1(mgr); - drm_dp_mst_put_payload_id(mgr, port->vcpi.vcpi); - } - drm_dp_mst_put_port_malloc(port); send_hotplug = true; } -- 2.19.2

.../* @@ -3496,12 +3494,6 @@ static void drm_dp_destroy_connector_work(struct work_struct *work) drm_dp_port_teardown_pdt(port, port->pdt); port->pdt = DP_PEER_DEVICE_NONE; - if (!port->input && port->vcpi.vcpi > 0) { - drm_dp_mst_reset_vcpi_slots(mgr, port); - drm_dp_update_payload_part1(mgr); - drm_dp_mst_put_payload_id(mgr, port->vcpi.vcpi); - } - drm_dp_mst_put_port_malloc(port); send_hotplug = true; } -- 2.20.1

...fe2..d05c57c 100644 > --- a/drivers/gpu/drm/nouveau/dispnv50/disp.c > +++ b/drivers/gpu/drm/nouveau/dispnv50/disp.c > @@ -1379,6 +1379,9 @@ nv50_mstm_prepare(struct nv50_mstm *mstm) > > NV_ATOMIC(drm, "%s: mstm prepare\n", mstm->outp->base.base.name); > ret = drm_dp_update_payload_part1(&mstm->mgr); > + if (ret) { > + NV_ATOMIC(drm, "failed to update payload %d\n", ret); > + } Remove the braces around ret and this is: Reviewed-by: Lyude Paul <lyude at redhat.com> > > drm_for_each_encoder(encoder, mstm->outp->...

...eau/dispnv50/disp.c index b111fe2..abc4f46 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/disp.c +++ b/drivers/gpu/drm/nouveau/dispnv50/disp.c @@ -1379,6 +1379,8 @@ nv50_mstm_prepare(struct nv50_mstm *mstm) NV_ATOMIC(drm, "%s: mstm prepare\n", mstm->outp->base.base.name); ret = drm_dp_update_payload_part1(&mstm->mgr); + if (ret) + NV_ATOMIC(drm, "failed to update payload %d\n", ret); drm_for_each_encoder(encoder, mstm->outp->base.base.dev) { if (encoder->encoder_type == DRM_MODE_ENCODER_DPMST) { -- 2.7.4

This is the series I've been working on for a while now to get all of the atomic DRM drivers in the tree to use the atomic MST helpers, and to make the atomic MST helpers actually idempotent. Turns out it's a lot more difficult to do that without also fixing how port and branch device refcounting works so that it actually makes sense, since the current upstream implementation requires a

This is the series I've been working on for a while now to get all of the atomic DRM drivers in the tree to use the atomic MST helpers, and to make the atomic MST helpers actually idempotent. Turns out it's a lot more difficult to do that without also fixing how port and branch device refcounting works so that it actually makes sense, since the current upstream implementation requires a

...rt/branch device structures in memory, as per: 91a25e463130 ("drm/dp/mst: deallocate payload on port destruction") Which may have worked, but then it caused use-after-free errors. Being new to MST at the time, I tried fixing it; 263efde31f97 ("drm/dp/mst: Get validated port ref in drm_dp_update_payload_part1()") But, that was broken: both drm_dp_mst_port and drm_dp_mst_branch structs are validated in almost every DP MST helper function. Simply put, this means we go through the topology and try to see if the given drm_dp_mst_branch or drm_dp_mst_port is still attached to something before trying to...

This is the series I've been working on for a while now to get all of the atomic DRM drivers in the tree to use the atomic MST helpers, and to make the atomic MST helpers actually idempotent. Turns out it's a lot more difficult to do that without also fixing how port and branch device refcounting works so that it actually makes sense, since the current upstream implementation requires a